What is a wrench? Distinguish wrench and wrench, note when using?

Many people are confused by the many similarities of wrenches and wrenches because their uses are quite similar. Let’s learn about the difference between these two tools through the following article of Tnhelearning.edu.vn!

What is a wrench? Common types of wrenches

What is a wrench?

Wrench is a hand-held tool that holds and rotates nuts, bolts, pins and threaded details,… Thanks to its convenience and compact size , wrenches are widely used in life. live everyday.

Wrench is usually manufactured from super hard chrome plated steel with very high strength and resistance to rust, not bending, breaking when subjected to great force. Especially with the long, sturdy body design, suitable for grip, it helps to minimize slippage.

By making disassembly work easy and save a lot of time and effort, this hand tool is being applied in most areas of life as well as production such as:

• Remove and open pipes or round objects and objects without grip.
• Loosen/tighten the machine screws.
• Widely used in machine manufacturing, processing, repair and maintenance of motorcycles, automobiles, mechanical, electrical, auto repair and other installation maintenance activities in industry.

Common types of wrenches

• Set of 2-opening wrenches: includes 2 U-shaped openings for the ability to clamp opposite nuts and bolts, these 2 heads are usually of different sizes and are oriented at an angle of 15 degrees relative to the vertical axis of the hand. hold. As a result, the range of movement of the key will be greater in an enclosed space.
• Double end spanner: consists of 2 hollow round tips , with a hexagonal or 12 sided shape on the inside compatible with 6 or 12 hexagonal nuts, in different sizes. The two ends of the ring are usually designed in line with the body or with a 15 degree bevel to create clearance, increasing the operating range of the device.

• 2-head combination wrench set: is a combination of an open end and a ring head . For the convenience of repair, these two heads have been integrated on the same device.

In addition, there are specialized wrenches appearing on the market such as: force wrenches, mouse tail wrenches.

• Torque wrench: a special wrench with the ability to adjust the force on the object to be tightened . On these keys there is a modern design with a display. When tightening the screw, the tightening force will be displayed on the screen to help the user determine the required force to tighten the most suitable.

• Mouse tail wrench (scaffold wrench, rattail wrench, rattail pipe, scaffolding tube): one end is an automatic wrench (hand crank) and the other end (type). They can be reversed by flipping over the wrench or activating a reverse lever on the wrench. This device is commonly used to lock scaffolding screws (tighten or loosen scaffold bolts).

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What is a wrench? How many types are there?

What is a wrench?

The wrench is also a specialized hand-held device for repair and mechanical processing made from metals and alloys with high hardness such as Chromium, Steel, Vanadium,….

The special feature of the wrench compared to other wrenches is that they can be adjusted to the size and width of the clamp . Thanks to that, a wrench can turn many different types of nuts instead of 1 or 2 types like in wrenches.

Classification of wrenches

• Ordinary wrench : basic structure with a head with 2 jaws: fixed jaw and movable jaw to change the size thanks to a roller. The wrench is usually 4” to 14” in size, depending on the needs we choose accordingly.

• Tooth wrench (water pliers): two jaws are designed with serrated grooves to increase friction, the usual size will be from 6″ to 36″ even up to 48″. Thanks to these serrated grooves, in addition to screwing bolts and nuts, this device can also screw joints of pipes with circular cross-section.

• Chain wrench : composed of a handle, a serrated mount and a chain . This type of wrench is quite rare, only commonly used in the dismantling of large cylindrical pipes and maintenance of large machinery.

How is a wrench different from a wrench?

Both wrenches and wrenches are specialized handheld devices for repair and mechanical processing. It can be said that a wrench is a special type of wrench , but it is more flexible because it is equipped with a mobile mount that makes it easy to adjust the size.

How to use wrenches and wrenches

How to use wrenches and wrenches properly. Find out in the information below.

Choose wrenches, wrenches that match the size of the nut

First, you need to check nuts, bolts , etc. to determine the size to choose the appropriate wrench. The use of wrenches, wrenches to open and tighten screws will use force. Therefore, in order to prevent the nut from being deformed, it is advisable to pay attention to the specifications on the spanner as well as on the nut.

For wrenches, if the size of the nut is not determined, you can check each size to choose the right screwdriver.

For wrenches, you need to adjust the roller so that the 2 jaws of the wrench are in tight contact with the screw before applying force to turn or tighten.

Note when using wrenches, wrenches

Should use traction instead of thrust

Many people use push to tighten and loosen nuts instead of pulling. Usually thrust will create a stronger, more efficient resource. However, if we are not careful, when pushing the wrench, the wrench slips, we are very easy to lose momentum, rush away, which can lead to a dangerous accident.

There are many cases where users extend the screw device with long iron pipes. However, that should stop immediately because they can have some of the following consequences:

• The handle of the wrench, the wrench will be very easy to bend or even break.
• As the swing arm lengthens, the impact force will also increase. That can cause the hexagon nut to wear out to a circular shape.
• The extension rod does not have a pin to connect to the wrench, so it can easily lead to slipping, which brings many dangers.

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The above article has provided information on the concept, uses as well as how to distinguish and use wrenches and wrenches. Equip your family with wrenches and wrenches to make it easier and more convenient in your life!